I was recently asked to serve as the speed/strength coach for the Montgomery County NFL high school combine that is being held at Einstein High School May 17-21. Part of my responsibilities will be to properly prepare the athletes for the day. What does that involve? Recently the way athletes warm-up has changed from general warm-up and stretching to general warm-up and dynamic flexibility. What is the difference? The difference is that for many years coaches were using static stretching to prepare for football based activities such as sprinting, tackling, and many other actions that are associated with football. In general, the warm-up should prepare the athlete for the practice ahead. The dynamic flexibility sequence reflects and should be specific to the practice. The sequence should include exercises such as high knees, butt kicks, frankensteins's and even some sprinting based drills to ensure proper stride mechanics for sprinting. At the end of the warm-up the athlete should be sweating and ready for the practice. There is a place for static stretching and that is at the end of practice as a cooldown.